<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 10px;
      grid-template-rows: 100px 100px;
    }
    .wrapper > div {
      background: pink;
      border-radius: 8px;
    }
    .box1 {
      grid-column: 1;
      grid-row: 1 / 3;
    }
    .box2 {
      grid-column: 2 / 3;
      grid-row: 1;
    }
    .box3 {
      grid-column: 3;
      grid-row: 2;
    }
  </style>
</head>
<body>
  <div class="wrapper">
    <div class="box1">box1</div>
    <div class="box2">box2</div>
    <div class="box3">box3</div>
  </div>
</body>
</html>